Crew was engaged in a geodesic work mission over the Coromoro Region, Colombia. In flight, while cruising in poor weather conditions, aircraft hit a mountain slope at an altitude of some 4,500 meters and was destroyed by impact forces and post crash fire. Debris were found a day later some 50 miles south of Bucaramanga and both occupants (Peter Moore, co-founder of Oracle Geoscience International and Neville Ribeiro, pilot) were killed.